Patents by Inventor Yong-Jin Jang

Yong-Jin Jang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Preparation method of polyarylene sulfide
    Patent number: 11192980
    Abstract: The present disclosure relates to a preparation method of a polyarylene sulfide, and this method may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method at a high yield by adding an aliphatic amino acid hydrochloride in addition to existing materials for dehydration.
    Type: Grant
    Filed: November 23, 2018
    Date of Patent: December 7, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Eunju Park, Hansol Kim, Joong Jin Han, Hyun Woog Ryu, Kwonsu Jung, Yong Jin Jang
  • Polymer electrolyte for secondary battery and lithium secondary battery comprising the same
    Patent number: 11114692
    Abstract: The present invention relates to a polymer electrolyte for a secondary battery and a lithium secondary battery comprising the same, and particularly, to a polymer electrolyte for a secondary battery, in which mechanical properties, ionic conductivity, and electrical conductivity are improved by comprising a polymer and an electron-acceptor having at least one double bond, as a dopant, and a lithium secondary battery in which electrochemical stability at high temperature and high voltage is enhanced by comprising the polymer electrolyte.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: September 7, 2021
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Young Jea Kim, Yong Jin Jang, Joong Jin Han, Chul Haeng Lee
  • PREPARATION METHOD OF POLYARYLENE SULFIDE
    Publication number: 20210171715
    Abstract: The present disclosure relates to a preparation method of a polyarylene sulfide, and this method may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method at a high yield by adding an aliphatic amino acid hydrochloride in addition to existing materials for dehydration.
    Type: Application
    Filed: November 23, 2018
    Publication date: June 10, 2021
    Inventors: Eunju PARK, Hansol KIM, Joong Jin HAN, Hyun Woog RYU, Kwonsu JUNG, Yong Jin JANG
  • Block polymer and polymer electrolyte membrane comprising same
    Patent number: 10947338
    Abstract: The present specification relates to a block polymer and a polymer electrolyte membrane including the same, a membrane-electrode assembly including the polymer electrolyte membrane, a fuel cell including the membrane-electrode assembly and a redox flow battery including the polymer electrolyte membrane.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: March 16, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Yong Jin Jang, Joong Jin Han, Youngjea Kim, Esder Kang, Yunah Yu, Eunju Park, Yu Jin Kim
  • Block polymer and polymer electrolyte membrane including same
    Patent number: 10899874
    Abstract: The present specification relates to a block polymer and a polymer electrolyte membrane comprising the same, a membrane-electrode assembly comprising the polymer electrolyte membrane, a fuel cell comprising the membrane-electrode assembly, and a redox flow battery comprising the polymer electrolyte membrane.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: January 26, 2021
    Assignee: LG CHEM, LTD
    Inventors: Yong Jin Jang, Joong Jin Han, Esder Kang, Yunah Yu, Youngjea Kim
  • Polymer electrolyte for secondary battery and secondary battery including the same
    Patent number: 10749210
    Abstract: The present invention provides a polymer electrolyte for a secondary battery having high ionic conductivity, and a lithium secondary battery including the same.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: August 18, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Young Jea Kim, Yong Jin Jang, Joong Jin Han, Chul Haeng Lee
  • Compound and polymer electrolyte membrane using same
    Patent number: 10727516
    Abstract: The present specification relates to a novel compound, a polymer electrolyte membrane including the same, a membrane-electrode assembly including the polymer electrolyte membrane, a fuel cell including the membrane-electrode assembly, and a redox flow battery including the polymer electrolyte membrane.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: July 28, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Yong Jin Jang, Joong Jin Han, Sehee Jung, Youngjea Kim, Esder Kang, Hyun Woog Ryu
  • Polymer Electrolyte for Secondary Battery and Lithium Secondary Battery Comprising the Same
    Publication number: 20200194832
    Abstract: The present invention relates to a polymer electrolyte for a secondary battery and a lithium secondary battery comprising the same, and particularly, to a polymer electrolyte for a secondary battery, in which mechanical properties, ionic conductivity, and electrical conductivity are improved by comprising a polymer and an electron-acceptor having at least one double bond, as a dopant, and a lithium secondary battery in which electrochemical stability at high temperature and high voltage is enhanced by comprising the polymer electrolyte.
    Type: Application
    Filed: July 3, 2018
    Publication date: June 18, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Young Jea Kim, Yong Jin Jang, Joong Jin Han, Chul Haeng Lee
  • POLYMER ELECTROLYTE FOR SECONDARY BATTERY AND SECONDARY BATTERY INCLUDING THE SAME
    Publication number: 20200014064
    Abstract: The present invention provides a polymer electrolyte for a secondary battery having high ionic conductivity, and a lithium secondary battery including the same.
    Type: Application
    Filed: October 30, 2017
    Publication date: January 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sol Ji Park, Kyoung Ho Ahn, Young Jea Kim, Yong Jin Jang, Joong Jin Han, Chul Haeng Lee
  • Fluorine-based compound for brancher, polymer using same, and polymer electrolyte membrane using same
    Patent number: 10526282
    Abstract: The present specification relates to a fluorine-based compound for a brancher, a polymer using the same, a polymer electrolyte membrane using the same, a fuel cell using the same, and a redox flow battery including the same.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: January 7, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Hyun Woog Ryu, Sehee Jung, Joong Jin Han, Yong Jin Jang, Youngjea Kim, Esder Kang
  • Polymer electrolyte membrane
    Patent number: 10483576
    Abstract: The present specification relates to a polymer electrolyte membrane including a polymer and inorganic particles.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: November 19, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Youngjea Kim, Joong Jin Han, Yunah Yu, Esder Kang, Yong Jin Jang
  • Polymer and polymer electrolyte membrane comprising same
    Patent number: 10446864
    Abstract: The present specification relates to a polymer with improved ion transport capability, a polymer electrolyte membrane including the same, a membrane-electrode assembly including the polymer electrolyte membrane, a fuel cell including the membrane-electrode assembly, and a redox flow battery including the polymer electrolyte membrane.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: October 15, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Esder Kang, Joong Jin Han, Youngjea Kim, Yong Jin Jang, Yunah Yu
  • Compound comprising aromatic ring, and polyelectrolyte membrane using same
    Patent number: 10428016
    Abstract: The present specification relates to a compound comprising an aromatic ring, a polyelectrolyte membrane comprising the same, a membrane-electrode assembly comprising the polyelectrolyte membrane, a fuel cell comprising the membrane-electrode assembly, and a redox flow battery comprising the polyelectrolyte membrane.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: October 1, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Yong Jin Jang, Joong Jin Han, Youngjea Kim, Esder Kang, Sehee Jung, Hyun Woog Ryu, Yunah Yu
  • Compound comprising aromatic ring having sulfonamide and ion transport group, polymer comprising same, and polyelectrolyte membrane using same
    Patent number: 10418656
    Abstract: The present specification relates to a compound comprising an aromatic ring, a polymer comprising the same, a polyelectrolyte membrane comprising the same, a membrane-electrode assembly comprising the polyelectrolyte membrane, a fuel cell comprising the membrane-electrode assembly, and a redox flow battery comprising the polyelectrolyte membrane.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: September 17, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Yong Jin Jang, Joong Jin Han, Youngjea Kim, Esder Kang, Sehee Jung, Hyun Woog Ryu, Yunah Yu
  • Polymer and polymer electrolyte membrane comprising same
    Patent number: 10407521
    Abstract: The present specification relates to a polymer and a polymer electrolyte membrane including the same.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: September 10, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Esder Kang, Hyun Woog Ryu, Joong Jin Han, Youngjea Kim, Sehee Jung, Yong Jin Jang
  • Polymer electrolyte membrane
    Patent number: 10411283
    Abstract: The present specification relates to a polymer electrolyte membrane including two types of polymers.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: September 10, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Youngjea Kim, Yong Jin Jang, Joong Jin Han, Esder Kang, Yunah Yu
  • Polymerization composition, polymer using polymerization composition, and polymer electrolyte membrane using polymer
    Patent number: 10407545
    Abstract: The present specification relates to a polymerization composition, a polymer using the same, a polymer electrolyte membrane using the same, a fuel cell including the same, and a redox flow battery including the same.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: September 10, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Sehee Jung, Joong Jin Han, Hyun Woog Ryu, Yong Jin Jang, Youngjea Kim, Esder Kang
  • Polymer and polymer electrolyte membrane comprising same
    Patent number: 10361447
    Abstract: The present specification relates to a polymer with improved acid resistance, a polymer electrolyte membrane including the same, a membrane-electrode assembly including the polymer electrolyte membrane, a fuel cell including the membrane-electrode assembly, and a redox flow battery including the polymer electrolyte membrane.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: July 23, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Esder Kang, Joong Jin Han, Youngjea Kim, Sehee Jung, Hyun Woog Ryu, Yong Jin Jang, Soyoung Yu
  • Halogenated compound, polymer comprising same, and polymer electrolyte membrane comprising same
    Patent number: 10312542
    Abstract: The present specification relates to a halogenated compound, a polymer and a polymer electrolyte membrane including the same.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: June 4, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Yong Jin Jang, Joong Jin Han, Sehee Jung, Youngjea Kim, Esder Kang, Hyun Woog Ryu
  • BLOCK POLYMER AND POLYMER ELECTROLYTE MEMBRANE COMPRISING SAME
    Publication number: 20190106530
    Abstract: The present specification relates to a block polymer and a polymer electrolyte membrane including the same, a membrane-electrode assembly including the polymer electrolyte membrane, a fuel cell including the membrane-electrode assembly and a redox flow battery including the polymer electrolyte membrane.
    Type: Application
    Filed: March 21, 2017
    Publication date: April 11, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Yong Jin JANG, Joong Jin HAN, Youngjea KIM, Esder KANG, Yunah YU, Eunju PARK, Yu Jin KIM